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Finding the Fourth Proportional to 636,209.46, 877,970.10 and 349,731.36

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Solution

The fourth proportional to 636,209.46, 877,970.10 and 349,731.36 is: 482,629.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,209.46 : 877,970.10 = 349,731.36 : x
  2. Step 2: Convert to fraction form
    636,209.46/877,970.10 = 349,731.36/x
  3. Step 3: Cross multiply
    636,209.46x = 877,970.10 × 349,731.36
  4. Step 4: Simplify right side
    636,209.46x = 307,053,677,112.34
  5. Step 5: Solve for x
    x = 307,053,677,112.34/636,209.46
  6. Step 6: Final answer
    x = 482,629.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.